diff options
Diffstat (limited to 'drivers/power/supply/axp20x_usb_power.c')
| -rw-r--r-- | drivers/power/supply/axp20x_usb_power.c | 368 |
1 files changed, 326 insertions, 42 deletions
diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index dae7e5cfc54e..2766352ab737 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -30,8 +30,13 @@ #define AXP20X_PWR_STATUS_VBUS_PRESENT BIT(5) #define AXP20X_PWR_STATUS_VBUS_USED BIT(4) +#define AXP717_PWR_STATUS_VBUS_GOOD BIT(5) + #define AXP20X_USB_STATUS_VBUS_VALID BIT(2) +#define AXP717_PMU_FAULT_VBUS BIT(5) +#define AXP717_PMU_FAULT_VSYS BIT(3) + #define AXP20X_VBUS_VHOLD_uV(b) (4000000 + (((b) >> 3) & 7) * 100000) #define AXP20X_VBUS_VHOLD_MASK GENMASK(5, 3) #define AXP20X_VBUS_VHOLD_OFFSET 3 @@ -39,12 +44,20 @@ #define AXP20X_ADC_EN1_VBUS_CURR BIT(2) #define AXP20X_ADC_EN1_VBUS_VOLT BIT(3) +#define AXP717_INPUT_VOL_LIMIT_MASK GENMASK(3, 0) +#define AXP717_INPUT_CUR_LIMIT_MASK GENMASK(5, 0) +#define AXP717_ADC_DATA_MASK GENMASK(14, 0) + +#define AXP717_ADC_EN_VBUS_VOLT BIT(2) + /* * Note do not raise the debounce time, we must report Vusb high within * 100ms otherwise we get Vbus errors in musb. */ #define DEBOUNCE_TIME msecs_to_jiffies(50) +struct axp20x_usb_power; + struct axp_data { const struct power_supply_desc *power_desc; const char * const *irq_names; @@ -58,6 +71,10 @@ struct axp_data { struct reg_field usb_bc_det_fld; struct reg_field vbus_disable_bit; bool vbus_needs_polling: 1; + void (*axp20x_read_vbus)(struct work_struct *work); + int (*axp20x_cfg_iio_chan)(struct platform_device *pdev, + struct axp20x_usb_power *power); + int (*axp20x_cfg_adc_reg)(struct axp20x_usb_power *power); }; struct axp20x_usb_power { @@ -74,6 +91,7 @@ struct axp20x_usb_power { struct iio_channel *vbus_v; struct iio_channel *vbus_i; struct delayed_work vbus_detect; + int max_input_cur; unsigned int old_status; unsigned int online; unsigned int num_irqs; @@ -136,6 +154,24 @@ out: mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME); } +static void axp717_usb_power_poll_vbus(struct work_struct *work) +{ + struct axp20x_usb_power *power = + container_of(work, struct axp20x_usb_power, vbus_detect.work); + unsigned int val; + int ret; + + ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &val); + if (ret) + return; + + val &= AXP717_PWR_STATUS_VBUS_GOOD; + if (val != power->old_status) + power_supply_changed(power->supply); + + power->old_status = val; +} + static int axp20x_get_usb_type(struct axp20x_usb_power *power, union power_supply_propval *val) { @@ -281,6 +317,91 @@ static int axp20x_usb_power_get_property(struct power_supply *psy, return 0; } +static int axp717_usb_power_get_property(struct power_supply *psy, + enum power_supply_property psp, union power_supply_propval *val) +{ + struct axp20x_usb_power *power = power_supply_get_drvdata(psy); + unsigned int v; + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_HEALTH: + val->intval = POWER_SUPPLY_HEALTH_GOOD; + ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &v); + if (ret) + return ret; + + if (!(v & AXP717_PWR_STATUS_VBUS_GOOD)) + val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + + ret = regmap_read(power->regmap, AXP717_PMU_FAULT_VBUS, &v); + if (ret) + return ret; + + v &= (AXP717_PMU_FAULT_VBUS | AXP717_PMU_FAULT_VSYS); + if (v) { + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + regmap_write(power->regmap, AXP717_PMU_FAULT_VBUS, v); + } + + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = regmap_read(power->regmap, AXP717_INPUT_CUR_LIMIT_CTRL, &v); + if (ret) + return ret; + + /* 50ma step size with 100ma offset. */ + v &= AXP717_INPUT_CUR_LIMIT_MASK; + val->intval = (v * 50000) + 100000; + break; + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_PRESENT: + ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &v); + if (ret) + return ret; + val->intval = !!(v & AXP717_PWR_STATUS_VBUS_GOOD); + break; + case POWER_SUPPLY_PROP_USB_TYPE: + return axp20x_get_usb_type(power, val); + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + ret = regmap_read(power->regmap, AXP717_INPUT_VOL_LIMIT_CTRL, &v); + if (ret) + return ret; + + /* 80mv step size with 3.88v offset. */ + v &= AXP717_INPUT_VOL_LIMIT_MASK; + val->intval = (v * 80000) + 3880000; + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + if (IS_ENABLED(CONFIG_AXP20X_ADC)) { + ret = iio_read_channel_processed(power->vbus_v, + &val->intval); + if (ret) + return ret; + + /* + * IIO framework gives mV but Power Supply framework + * gives uV. + */ + val->intval *= 1000; + return 0; + } + + ret = axp20x_read_variable_width(power->regmap, + AXP717_VBUS_V_H, 16); + if (ret < 0) + return ret; + + val->intval = (ret % AXP717_ADC_DATA_MASK) * 1000; + break; + default: + return -EINVAL; + } + + return 0; + +} + static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power, int intval) { @@ -307,6 +428,22 @@ static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power, return -EINVAL; } +static int axp717_usb_power_set_voltage_min(struct axp20x_usb_power *power, + int intval) +{ + int val; + + /* Minimum value of 3.88v and maximum of 5.08v. */ + if (intval < 3880000 || intval > 5080000) + return -EINVAL; + + /* step size of 80ma with 3.88v offset. */ + val = (intval - 3880000) / 80000; + return regmap_update_bits(power->regmap, + AXP717_INPUT_VOL_LIMIT_CTRL, + AXP717_INPUT_VOL_LIMIT_MASK, val); +} + static int axp20x_usb_power_set_input_current_limit(struct axp20x_usb_power *power, int intval) { @@ -317,6 +454,13 @@ static int axp20x_usb_power_set_input_current_limit(struct axp20x_usb_power *pow if (intval == -1) return -EINVAL; + if (power->max_input_cur && (intval > power->max_input_cur)) { + dev_warn(power->dev, + "requested current %d clamped to max current %d\n", + intval, power->max_input_cur); + intval = power->max_input_cur; + } + /* * BC1.2 detection can cause a race condition if we try to set a current * limit while it's in progress. When it finishes it will overwrite the @@ -340,6 +484,29 @@ static int axp20x_usb_power_set_input_current_limit(struct axp20x_usb_power *pow return regmap_field_write(power->curr_lim_fld, reg); } +static int axp717_usb_power_set_input_current_limit(struct axp20x_usb_power *power, + int intval) +{ + int tmp; + + /* Minimum value of 100mA and maximum value of 3.25A*/ + if (intval < 100000 || intval > 3250000) + return -EINVAL; + + if (power->max_input_cur && (intval > power->max_input_cur)) { + dev_warn(power->dev, + "reqested current %d clamped to max current %d\n", + intval, power->max_input_cur); + intval = power->max_input_cur; + } + + /* Minimum value of 100mA with step size of 50mA. */ + tmp = (intval - 100000) / 50000; + return regmap_update_bits(power->regmap, + AXP717_INPUT_CUR_LIMIT_CTRL, + AXP717_INPUT_CUR_LIMIT_MASK, tmp); +} + static int axp20x_usb_power_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) @@ -362,6 +529,24 @@ static int axp20x_usb_power_set_property(struct power_supply *psy, default: return -EINVAL; } +} + +static int axp717_usb_power_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct axp20x_usb_power *power = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return axp717_usb_power_set_input_current_limit(power, val->intval); + + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + return axp717_usb_power_set_voltage_min(power, val->intval); + + default: + return -EINVAL; + } return -EINVAL; } @@ -385,6 +570,64 @@ static int axp20x_usb_power_prop_writeable(struct power_supply *psy, psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT; } +static int axp717_usb_power_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN || + psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT; +} + +static int axp20x_configure_iio_channels(struct platform_device *pdev, + struct axp20x_usb_power *power) +{ + power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v"); + if (IS_ERR(power->vbus_v)) { + if (PTR_ERR(power->vbus_v) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(power->vbus_v); + } + + power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i"); + if (IS_ERR(power->vbus_i)) { + if (PTR_ERR(power->vbus_i) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(power->vbus_i); + } + + return 0; +} + +static int axp717_configure_iio_channels(struct platform_device *pdev, + struct axp20x_usb_power *power) +{ + power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v"); + if (IS_ERR(power->vbus_v)) { + if (PTR_ERR(power->vbus_v) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(power->vbus_v); + } + + return 0; +} + +static int axp20x_configure_adc_registers(struct axp20x_usb_power *power) +{ + /* Enable vbus voltage and current measurement */ + return regmap_update_bits(power->regmap, AXP20X_ADC_EN1, + AXP20X_ADC_EN1_VBUS_CURR | + AXP20X_ADC_EN1_VBUS_VOLT, + AXP20X_ADC_EN1_VBUS_CURR | + AXP20X_ADC_EN1_VBUS_VOLT); +} + +static int axp717_configure_adc_registers(struct axp20x_usb_power *power) +{ + /* Enable vbus voltage measurement */ + return regmap_update_bits(power->regmap, AXP717_ADC_CH_EN_CONTROL, + AXP717_ADC_EN_VBUS_VOLT, + AXP717_ADC_EN_VBUS_VOLT); +} + static enum power_supply_property axp20x_usb_power_properties[] = { POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, @@ -403,6 +646,16 @@ static enum power_supply_property axp22x_usb_power_properties[] = { POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, }; +static enum power_supply_property axp717_usb_power_properties[] = { + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_VOLTAGE_MIN, + POWER_SUPPLY_PROP_VOLTAGE_NOW, +}; + static enum power_supply_property axp813_usb_power_properties[] = { POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, @@ -412,13 +665,6 @@ static enum power_supply_property axp813_usb_power_properties[] = { POWER_SUPPLY_PROP_USB_TYPE, }; -static enum power_supply_usb_type axp813_usb_types[] = { - POWER_SUPPLY_USB_TYPE_SDP, - POWER_SUPPLY_USB_TYPE_DCP, - POWER_SUPPLY_USB_TYPE_CDP, - POWER_SUPPLY_USB_TYPE_UNKNOWN, -}; - static const struct power_supply_desc axp20x_usb_power_desc = { .name = "axp20x-usb", .type = POWER_SUPPLY_TYPE_USB, @@ -439,6 +685,20 @@ static const struct power_supply_desc axp22x_usb_power_desc = { .set_property = axp20x_usb_power_set_property, }; +static const struct power_supply_desc axp717_usb_power_desc = { + .name = "axp20x-usb", + .type = POWER_SUPPLY_TYPE_USB, + .properties = axp717_usb_power_properties, + .num_properties = ARRAY_SIZE(axp717_usb_power_properties), + .property_is_writeable = axp717_usb_power_prop_writeable, + .get_property = axp717_usb_power_get_property, + .set_property = axp717_usb_power_set_property, + .usb_types = BIT(POWER_SUPPLY_USB_TYPE_SDP) | + BIT(POWER_SUPPLY_USB_TYPE_CDP) | + BIT(POWER_SUPPLY_USB_TYPE_DCP) | + BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN), +}; + static const struct power_supply_desc axp813_usb_power_desc = { .name = "axp20x-usb", .type = POWER_SUPPLY_TYPE_USB, @@ -447,8 +707,10 @@ static const struct power_supply_desc axp813_usb_power_desc = { .property_is_writeable = axp20x_usb_power_prop_writeable, .get_property = axp20x_usb_power_get_property, .set_property = axp20x_usb_power_set_property, - .usb_types = axp813_usb_types, - .num_usb_types = ARRAY_SIZE(axp813_usb_types), + .usb_types = BIT(POWER_SUPPLY_USB_TYPE_SDP) | + BIT(POWER_SUPPLY_USB_TYPE_CDP) | + BIT(POWER_SUPPLY_USB_TYPE_DCP) | + BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN), }; static const char * const axp20x_irq_names[] = { @@ -463,6 +725,12 @@ static const char * const axp22x_irq_names[] = { "VBUS_REMOVAL", }; +static const char * const axp717_irq_names[] = { + "VBUS_PLUGIN", + "VBUS_REMOVAL", + "VBUS_OVER_V", +}; + static int axp192_usb_curr_lim_table[] = { -1, -1, @@ -505,6 +773,9 @@ static const struct axp_data axp192_data = { .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1), .vbus_valid_bit = REG_FIELD(AXP192_USB_OTG_STATUS, 2, 2), .vbus_mon_bit = REG_FIELD(AXP20X_VBUS_MON, 3, 3), + .axp20x_read_vbus = &axp20x_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp20x_configure_iio_channels, + .axp20x_cfg_adc_reg = axp20x_configure_adc_registers, }; static const struct axp_data axp202_data = { @@ -516,6 +787,9 @@ static const struct axp_data axp202_data = { .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1), .vbus_valid_bit = REG_FIELD(AXP20X_USB_OTG_STATUS, 2, 2), .vbus_mon_bit = REG_FIELD(AXP20X_VBUS_MON, 3, 3), + .axp20x_read_vbus = &axp20x_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp20x_configure_iio_channels, + .axp20x_cfg_adc_reg = axp20x_configure_adc_registers, }; static const struct axp_data axp221_data = { @@ -526,6 +800,9 @@ static const struct axp_data axp221_data = { .curr_lim_table_size = ARRAY_SIZE(axp221_usb_curr_lim_table), .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1), .vbus_needs_polling = true, + .axp20x_read_vbus = &axp20x_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp20x_configure_iio_channels, + .axp20x_cfg_adc_reg = axp20x_configure_adc_registers, }; static const struct axp_data axp223_data = { @@ -536,6 +813,23 @@ static const struct axp_data axp223_data = { .curr_lim_table_size = ARRAY_SIZE(axp20x_usb_curr_lim_table), .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1), .vbus_needs_polling = true, + .axp20x_read_vbus = &axp20x_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp20x_configure_iio_channels, + .axp20x_cfg_adc_reg = axp20x_configure_adc_registers, +}; + +static const struct axp_data axp717_data = { + .power_desc = &axp717_usb_power_desc, + .irq_names = axp717_irq_names, + .num_irq_names = ARRAY_SIZE(axp717_irq_names), + .curr_lim_fld = REG_FIELD(AXP717_INPUT_CUR_LIMIT_CTRL, 0, 5), + .usb_bc_en_bit = REG_FIELD(AXP717_MODULE_EN_CONTROL_1, 4, 4), + .usb_bc_det_fld = REG_FIELD(AXP717_BC_DETECT, 5, 7), + .vbus_mon_bit = REG_FIELD(AXP717_ADC_CH_EN_CONTROL, 2, 2), + .vbus_needs_polling = false, + .axp20x_read_vbus = &axp717_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp717_configure_iio_channels, + .axp20x_cfg_adc_reg = axp717_configure_adc_registers, }; static const struct axp_data axp813_data = { @@ -549,6 +843,9 @@ static const struct axp_data axp813_data = { .usb_bc_det_fld = REG_FIELD(AXP288_BC_DET_STAT, 5, 7), .vbus_disable_bit = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 7, 7), .vbus_needs_polling = true, + .axp20x_read_vbus = &axp20x_usb_power_poll_vbus, + .axp20x_cfg_iio_chan = axp20x_configure_iio_channels, + .axp20x_cfg_adc_reg = axp20x_configure_adc_registers, }; #ifdef CONFIG_PM_SLEEP @@ -590,36 +887,6 @@ static int axp20x_usb_power_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(axp20x_usb_power_pm_ops, axp20x_usb_power_suspend, axp20x_usb_power_resume); -static int configure_iio_channels(struct platform_device *pdev, - struct axp20x_usb_power *power) -{ - power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v"); - if (IS_ERR(power->vbus_v)) { - if (PTR_ERR(power->vbus_v) == -ENODEV) - return -EPROBE_DEFER; - return PTR_ERR(power->vbus_v); - } - - power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i"); - if (IS_ERR(power->vbus_i)) { - if (PTR_ERR(power->vbus_i) == -ENODEV) - return -EPROBE_DEFER; - return PTR_ERR(power->vbus_i); - } - - return 0; -} - -static int configure_adc_registers(struct axp20x_usb_power *power) -{ - /* Enable vbus voltage and current measurement */ - return regmap_update_bits(power->regmap, AXP20X_ADC_EN1, - AXP20X_ADC_EN1_VBUS_CURR | - AXP20X_ADC_EN1_VBUS_VOLT, - AXP20X_ADC_EN1_VBUS_CURR | - AXP20X_ADC_EN1_VBUS_VOLT); -} - static int axp20x_regmap_field_alloc_optional(struct device *dev, struct regmap *regmap, struct reg_field fdesc, @@ -640,6 +907,18 @@ static int axp20x_regmap_field_alloc_optional(struct device *dev, return 0; } +/* Optionally allow users to specify a maximum charging current. */ +static void axp20x_usb_power_parse_dt(struct device *dev, + struct axp20x_usb_power *power) +{ + int ret; + + ret = device_property_read_u32(dev, "input-current-limit-microamp", + &power->max_input_cur); + if (ret) + dev_dbg(dev, "%s() no input-current-limit specified\n", __func__); +} + static int axp20x_usb_power_probe(struct platform_device *pdev) { struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); @@ -676,6 +955,8 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) if (IS_ERR(power->curr_lim_fld)) return PTR_ERR(power->curr_lim_fld); + axp20x_usb_power_parse_dt(&pdev->dev, power); + ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap, axp_data->vbus_valid_bit, &power->vbus_valid_bit); @@ -707,7 +988,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) return ret; ret = devm_delayed_work_autocancel(&pdev->dev, &power->vbus_detect, - axp20x_usb_power_poll_vbus); + axp_data->axp20x_read_vbus); if (ret) return ret; @@ -718,9 +999,9 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) return ret; if (IS_ENABLED(CONFIG_AXP20X_ADC)) - ret = configure_iio_channels(pdev, power); + ret = axp_data->axp20x_cfg_iio_chan(pdev, power); else - ret = configure_adc_registers(power); + ret = axp_data->axp20x_cfg_adc_reg(power); if (ret) return ret; @@ -779,6 +1060,9 @@ static const struct of_device_id axp20x_usb_power_match[] = { .compatible = "x-powers,axp223-usb-power-supply", .data = &axp223_data, }, { + .compatible = "x-powers,axp717-usb-power-supply", + .data = &axp717_data, + }, { .compatible = "x-powers,axp813-usb-power-supply", .data = &axp813_data, }, { /* sentinel */ } |